Bracket and article attaching means



Aug. 17, 1954 W. P. OEH LER BRACKET AND ARTICLE ATTACHING MEANS OriginalFiled April 28, 1945 IN VEN TOR.

WILLIAM P. OEHLER ATTORNEYS Patented Aug. 17, 1954 BRACKET AND ARTICLEATTACHING MEANS William P. ()ehler, Molina, Ill., assignor to Deere &Company, Moline, 111., a corporation of Illinois Original applicationApril 28, 1945, Serial No.

590,831. Divided and this application December 29, 1948, Serial No.68,007

1 Claim.

This application is a division of my co-pending application, Serial No.590,831, filed April 28, 1945, for Disk Harrow, now U. S. Patent2,579,086, issued December 18, 1951.

The present invention relates generally to agricultural implements andmore particularly to disk harrows and the like that are adapted to bedrawn by a tractor and controlled by a power unit deriving power fromthe tractor but which may also be controlled manually in the event apower unit is not available.

The object and general nature of the present invention is the provisionof a disk harrow having new and improved means for receiving thehydraulic piston and cylinder unit of a hydraulic power lift whichnormally forms a permanent part of the tractor, the mounting mechanismbeing arranged to accommodate a quick and easy connection of thehydraulic unit to the implement and a quick and easy disconnection ofthe hydraulic unit from the implement, thereby facilitating hitching andunhitching the implement to and from the tractor.

More particularly, it is a feature of this invention to provide acylinder-receiving bracket having novel detent means which, whilereadily releasable, effectively secures the cylinder to the bracket butwhich may readily be operated to release the cylinder whenever desired.

These and other objects and advantages of the 1 present invention willbe apparent to those skilled in the art after a consideration of thefollowing detailed description, taken in conjunction with theaccompanying drawings in which the preferred form of the invention hasbeen illustrated.

In the drawings:

Figure 1 is a perspective view of a disk harrow in which the principlesof the present invention have been incorporated.

Figure 2 is a fragmentary perspective showing the cylinder-receivingbracket structure which detachably receives the hydraulic piston andcylinder unit.

Figure 3 is a view similar to Figure l but shoving the parts in thepositions they occupy when the hydraulic cylinder is removed and thedisk harrow controlled manually.

Referring now to the drawings, the disk harrow which has been chosen toillustrate the principles of the present invention incorporates a pairof disk gangs I, each having a scraper frame 2, the gangs beingconnected together at their inner ends for swinging in a generallyhorizontal plane into and out of straightened and angled positions. Itwill be understood that when the drawbar structure 5 of the disk harrowis connected, as by a clevis 6 or other suitable means.

The drawbar means of the disk harrow comprises a pair of relativelyslidable or telescopically associated members 3 and 9, the former beingconnected at its rear end to the inner ends of said gangs l andpreferably taking the form of a pair of angle members H and !2 connectedtogether by any suitable means, such as spacers [3, in laterally spacedapart relation. The front spacer it serves as a stop and will bereferred to below in detail, for the rear end of the other drawbarmember 9, which preferably is in the form of a channel having aplurality of apertures 15 therein and a stop plate l5 bolted to the rearend of the channel 9. The forward end of the channel receives a hitchbar H which is apertured to receive the clevis 5. A slide member I 8 ismounted on the drawbar channel 9 and is provided with lateral ears !9which are apertured to receive pins by which the forward ends of a pairof draft links 2! are pivotally connected to the slide member 8. Thedraft links 2! are connected at their rear ends to the ends of the diskgangs The slide it carries a latch structure 23 thereon, which includesa plunger 24 and a spring biased trip lever 25 mounted in support 26fixed to the upper plate of the slide [8. The outer end of the trip arm25 is apertured to receive a cable or operating rope which; when pulledforwardly, serves to raise the plung or 24 out of engagement with one ofthe openings [5 in the drawbar channel 5. i

For receiving the cylinder of a hydraulic unit, I provide a swinging orpivoted arm 3!, prefer ably made up of a pair of bars 32 and 33 which attheir lower ends are pivoted, as at 3%, to the front portion of the reardraw-bar member !8. The arm or lever 3! extends generally upwardly, andat their upper ends the bars 3i. and 33 are brought together to form anapertured lug 38 to which one end of the hydraulic piston cylinder unit38 may be connected in any suitable way, as by a quick detachable pin39.

Mounted on the forward end of the drawbar channel 9 is a bracket d! thatis made up of a plate bent into U-shape and notched, as at :32, toreceive a pin 53, which may be like the pin it mentioned above, carriedin a pair of apertured lugs 44 forming a part of the cylinder unit 38.The latter preferably comprises a cylinder proper, as shown at 41', anda piston rod 38 which at its rear end terminates in a yoke 49 aperturedto receive the quick detachable pin 38. The two sides and 52 of thebrackets cl are formed so as to provide the notch mentioned above, andthe two side portions are apertured to receive a pin 53 on which adetent 54 is swingably mounted. The detentisof the weighted orover-balance type, including the weighted end 55 and acylinder-locking'nose section -55. A. pair of apertures are formed'inthe bracket sides 5| and 52 to receive a pin 51 which forms a stop forthe weighted detent 54 andthus determines the cylinder-locking positionof the detent, as best shown in Figure 2. The cylinder 38 may readily beattached to the bracket 4| by pressing the pin 43 downwardly into thenotch 42, momentarily swinging the detent 54 upwardly so that the nose5% moves downwardly and accommodates the passage of the pin.43 of thecylinder 38 into a seating position in the notch 42, whereupon the nosesection 56 clears the pin and the detent 54 swings down into its lockingposition, as shown in Figure 2. 'The surface of the detent nose section56 that engages the cylinder pin '43 is so shaped that it bears againstthe pin at such an angle that the detent resists any tendency for thepin to inadvertently move out of the notch 42, yet the cylinder mayreadily be removed from the bracket 4! merely by lifting the detent .54so as to swing the nose section fifi downwardly and away from the pin,freeing the latter. Preferably, as best shown in Figure 2, the rearwardedge of the nose section 55 is substantially arcuate about the axis ofthe pin 53 as a center whereby, substantially as soon as the pin 43seats in the bottom of the notches 42, the arcuate nose section movesinto a position in contact with but above the central or widest part ofthe cyl- 4 the front end of the drawbar channel 9, the lower end of thearm or lever 3| shifts the drawbar member 3 forwardly relative to theforward drawbar member a, this movement occurring until the front end ofthe member 8 engages the slide it, which limits further collapsing ortelescoping movement. This brings the disk gangs I into theirstraightened or transport position. In order to cause the disk gangs 1to go into angle, all that it is necessary to do is to direct fluidunder pressure into the rear end of "the cylinder '38, thus causing thelever 3i to be swung in the other direction. Due to the slots 64, thismovement of the cylinder 38 does not forcibly-move the gangs into theirangled posiextend the cylinder 33 to exactly the right amount so as tobring the pin opposite the openings in the lug 35 at the same time thatthe pin :43 is disposed exactly the right position to enter the notch:32. However, the slots 54 thus disconnecting the piston rod from theupper end of the lever'3l.

.In order that operation of the cylinder 38 may be effective to shiftthe drawbar members 8 and 9 relative'to each other, an anchoring link 60is provided. Preferably, the anchoring link comprises a pair of rods 5|,each pivoted, as at 63, to the bracket -ll or to an adjacent portion ofthe channel 9, and at its rear end each of the rods BI is provided witha slot '64 through which a pin 55 carried by the side bars 32 and 33 ofthe lever 3l passes. A pair of hose lines 6%, 5? lead from the cylinder38 to a controlled source of fluid pressure on the tractor. Thehydraulic unit 38 is of the double acting type and is arranged so thatfluid under pressure may be di rected through one of the hose lines intoone side of the cylinder and'the fluidat the other side of the cylinderis discharged back to the tractor through the other hose line. Byopcrating the hydraulic controls the piston and cylinder unit may beextended or retracted by power, as desired. Referring to Figure 1, if,for example power is delivered to the hydraulic unit 38 to extend thesame, the arm or lever 3! is caused to swing so that, reacting throughthe links ti against permit a certain amount of free movement of the arm3!, and hence the attachment of the cylinder 33 is facilitated since allthat it is necessary to do in attaching the cylinder 33 is to swing thelever 3i manually, after seating the pin 43 in the notch 42, until theopening in the lug moves into a position registering with the openingsin the yoke E9, whereupon the quick detachable pin '39 'rnay readily bereconnected in place. I y

Figure 3 shows the parts when the cylinder unit 38 is entirely detachedtherefrom, and with a-ca-ble C connected to the outer end of the latchlever 25 for operating the latter by a pull exerted on the cable CiFigure 3 also shows the parts in the positions they may be in whenreattelch ing the unit 38. From this figure it will beclear how the arm3i may, by virtue of the slots t i, be swung manually into differentpositions in order to register the opening in the outer end of the arm8! with the openings in the yoke through which the pins :25 may extendThe fluid directed to the cylinder will then swing the arm '35 into aposition with its lower end sub stantially up against the slide 55, asillustrate in Figure 1.

While I have shown and'described above, the

preferred structure in which the principles of the present inventionhave been incorporated, it is to be understood that my invention is notto be limited to the particular details shown, and described above, butthat, in fact, widely different means may be employed in the broaderhandle, the rounded nose section being on the side of the detentadjacent said part, and a stop carried by said bracket in a position tocooperate with the detent for limiting movement of the detent about itspivot in a direction carrying the rounded nose section generallylaterally into a first position over said part so as to hold said partin the bottom of the notch, said rounded nose section beingsubstantially arouate about the pivot axis of said detent and thearcuate edge of said rounded nose section having a radius such that saidedge lies generally contiguous to the adjacent portion of said part whenthe detent engages said stop, whereby, while the part remains in thebottom of the notch, said detent may be swung about its pivot in theopposite direction so as to carry the rounded nose section past theadjacent portion of said part and into a second position away from saidpart, said detent being formed at the portion above said rounded nosesection so as to lie substantially flush with the laterally inner edgeof said one leg of said bracket when said detent is swung to carry saidnose section into said second position, thereby freeing said part.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 193,678 Unger July 31, 1877 362,405 Tompkins May 3, 1887466,672 Galbreath Jan. 5, 1892 933,511 Weston Sept. 7, 1909 1,491,219Wells Apr, 22, 1924 1,789,765 McKinney Jan. 20, 1931 1,846,465 BeckerFeb. 23, 1932 2,126,026 Munson Aug. 9, 1938 2,332,561 Drott Oct. 26,1943 2,486,372 Rockwell Oct. 25, 1949

